To watch apologize: Richard Blumenthal, in an e-mail to the Hartford Courant, for publicly misstating his role in the Vietnam War; and Mark Zuckerberg, the C.E.O. of Facebook, who, following weeks of criticism about privacy concerns, admitted, also in an e-mail, to “a bunch of mistakes.”

To struggle to take seriously: Arizona Governor Jan Brewer has released an ad defending her state’s controversial law empowering police to ask for residency papers for any suspected illegal immigrants. It opens with a frog puppet singing about how “reading is good.”